Model: 50440-530

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.875 inches
Fastener Length
3.750 inches
Head Style
Flat chamfer
Head Diameter
Between 0.457 inches and 0.469 inches
Head Height
Between 0.306 inches and 0.312 inches
Internal Drive Style
Hexagon
Thread Diameter
0.312 inches
Width Across Flats
0.250 inches
Thready Qty Per Inch (tpi)
18
Min. Tensile Strength (psi)
160000 pounds per square inch
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Hardness Rating
36.0 rockwell c and 43.0 rockwell c
Minimum Yield Strength
130000 pounds per square inch
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
Material
Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
Material Specification
Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response
Material Specification
Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification single treatment response
Thread Series Designator
Unc
NSN
5305-00-177-5482
Part Number
50440-530
Description
Screw,cap,socket Head
CAGE
80020

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 50440-530 NSN 5305-00-177-5482

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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